At BRS, every order ships free using a mix of economy shipping methods including, USPS, SurePost and UPS Ground. Your order will arrive within 2-7 days, depending on your vicinity to Minneapolis. Place your order by 3:30 PM CST Monday through Friday and we'll ship it the same day. This offer is only available to the contiguous USA. Frozen foods and post office boxes do not qualify for free shipping.*

$4.99 Upgraded 1-3 Day Shipping (Free over $249)

Your order will be upgraded from economy methods to ensure 1-3 business day delivery using UPS 3 day select and UPS ground regardless of weight or size. Place your order by 3:30 PM CST Monday through Friday and we'll ship it the same day. This offer is only available to the contiguous USA. Frozen foods and post office boxes do not qualify for upgraded shipping. See map below for transit times.*

*Click here to view detailed shipping information.
* Orders shipped same day when placed by 3:30pm CST, Monday through Friday. Orders placed after will ship the following business day. Example: order after 3:30pm CST on Monday, it will ship Tuesday. Order after 3:30pm CST on Friday, it will ship Monday.

At BRS, every order ships free using a mix of economy shipping methods including, USPS, SurePost and UPS Ground. Your order will arrive within 2-7 days, depending on your vicinity to Minneapolis. Place your order by 3:30 PM CST Monday through Friday and we'll ship it the same day. This offer is only available to the contiguous USA. Frozen foods and post office boxes do not qualify for free shipping.*

$4.99 Upgraded 1-3 Day Shipping (Free over $249)

Your order will be upgraded from economy methods to ensure 1-3 business day delivery using UPS 3 day select and UPS ground regardless of weight or size. Place your order by 3:30 PM CST Monday through Friday and we'll ship it the same day. This offer is only available to the contiguous USA. Frozen foods and post office boxes do not qualify for upgraded shipping. See map below for transit times.*

*Click here to view detailed shipping information.
* Orders shipped same day when placed by 3:30pm CST, Monday through Friday. Orders placed after will ship the following business day. Example: order after 3:30pm CST on Monday, it will ship Tuesday. Order after 3:30pm CST on Friday, it will ship Monday.

Ships today
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5h 56m

Free economy shipping on every order!

At BRS, every order ships free using a mix of economy shipping methods including, USPS, SurePost and UPS Ground. Your order will arrive within 2-7 days, depending on your vicinity to Minneapolis. Place your order by 3:30 PM CST Monday through Friday and we'll ship it the same day. This offer is only available to the contiguous USA. Frozen foods and post office boxes do not qualify for free shipping.*

$4.99 Upgraded 1-3 Day Shipping (Free over $249)

Your order will be upgraded from economy methods to ensure 1-3 business day delivery using UPS 3 day select and UPS ground regardless of weight or size. Place your order by 3:30 PM CST Monday through Friday and we'll ship it the same day. This offer is only available to the contiguous USA. Frozen foods and post office boxes do not qualify for upgraded shipping. See map below for transit times.*

*Click here to view detailed shipping information.
* Orders shipped same day when placed by 3:30pm CST, Monday through Friday. Orders placed after will ship the following business day. Example: order after 3:30pm CST on Monday, it will ship Tuesday. Order after 3:30pm CST on Friday, it will ship Monday.

Quick Overview

The TDS-3 Handheld TDS Meter from HM Digital is a useful tool to spot check the TDS of your home water supply or RO/DI unit output. This unit features a digital display, built in thermometer, and comes with a carrying case. As with all HM-Digital products, the TDS-3 comes factory calibrated.

Not AccurateBy Aaronon 4/13/2016

Aaron wouldn't recommend this product to a friend

I purchased this to verify my inline TDS meter was working properly. When I got it they were both off by 10 PPM. This was HMs response when asked about it: These meters are accurate within 2%, but have a range of 500ppm TDS, meaning 10ppm TDS is within that range of error. The product is not as accurate as hobbyists are looking for.

GreatBy Fredon 3/13/2016

Fred would recommend this product to a friend

Was curious if my Ro di was doing good and I bought this. Happy I did. Easy to use.

Works!By Paperpimpon 3/7/2016

Paperpimp would recommend this product to a friend

This meter works good for me! easy to use and seems well built!

working goodBy sikndon 2/6/2016

siknd would recommend this product to a friend

Have had this product for a few months now its been working great bought it to show friends and family the total dissolved solids in their drinking water and tap water also used it to double check my RO system make sure that the TDS from the meter on my ro system and from my handheld probe are the same. I have also use the temperature gauge on the hand held TDS meter to double check my temperatures from my tank probes and it has read within .1° of the two probes on the tank

Mine was defectiveBy Yakon 11/23/2015

Yak wouldn't recommend this product to a friend

I read all the great reviews on tihs product, tried it out, and it was just...not...accurate. Like my local LFS was reading 90 PPM. BRS was great to deal with though, gave me a full refund on the product. They must know a few go out defective.

Works greatBy Rayon 11/10/2015

Ray would recommend this product to a friend

product as ordered and works great.

Great and accurate. Must ownBy Walteron 9/5/2015

Walter would recommend this product to a friend

Was never sure what my home, fridge, ro drinking, or what my finished product water tds was. I was testing everything like crazy when I received this. Is very accurate with my finished product water at zero tds. Now I carry it with me everywhere due to my scientific curiosities. Thank you brs for another great product.

EASY AND WORTHWHILEBy Claudeon 12/15/2014

Claude would recommend this product to a friend

Easy to use, accurate, must have.

works greatBy Mikeon 10/29/2014

Mike would recommend this product to a friend

Does great, accurate!

not accurateBy tomson 9/8/2014

toms wouldn't recommend this product to a friend

Got tds meter to compare to one on my new brs 4 stage plus ro unit. Hand held not accurate at all. It read 68ppm on the filtered water and 75 on water supply in. I tested on local fish stores RO unit and same readings. I would not buy this tds meter

easyBy valerieon 2/27/2014

valerie would recommend this product to a friend

Ready to use as soon as you receive it. Very quick accurate readings.

This thing functions just as advertisedBy Johnon 12/31/2013

John would recommend this product to a friend

In my opinion u can't have two many TDS meters. I've had a few different kinds in the past but when I bought my BRS 5 stage RO/DI system with the online tds meter I decided to go ahead and buy this handheld meter. Just like everything else they make, it's built sturdy, and it looks professional comings with its own pouch. I hope im not starting to get spoilt.

Product Questions

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does this need calibration fluid?

Question by: trent on Apr 26, 2014 3:50:00 PM

Hi Trent,
No, they come pre-calibrated from the factory. Given the sensitivity of the instrument and the process involved its really recommended to not mess with the calibration or your really likely to make it less accurate.

The TDS-3 Handheld TDS Meter from HM Digital is a useful tool to spot check the TDS of your home water supply or RO/DI unit output. This unit features a digital display, built in thermometer, and comes with a carrying case. As with all HM-Digital products, the TDS-3 comes factory calibrated.

Ask a question

Product Questions

Name*

Email Address*

Submit Question Privately

Question will be displayed after moderation.

does this need calibration fluid?

Question by: trent on Apr 26, 2014 3:50:00 PM

Hi Trent,
No, they come pre-calibrated from the factory. Given the sensitivity of the instrument and the process involved its really recommended to not mess with the calibration or your really likely to make it less accurate.

Full Details

The TDS-3 Handheld TDS Meter from HM Digital is a useful tool to spot check the TDS of your home water supply or RO/DI unit output. This unit features a digital display, built in thermometer, and comes with a carrying case. As with all HM-Digital products, the TDS-3 comes factory calibrated.

Reviews

Not AccurateBy Aaron on 4/13/2016

Aaron wouldn't recommend this product to a friend

I purchased this to verify my inline TDS meter was working properly. When I got it they were both off by 10 PPM. This was HMs response when asked about it: These meters are accurate within 2%, but have a range of 500ppm TDS, meaning 10ppm TDS is within that range of error. The product is not as accurate as hobbyists are looking for.

GreatBy Fred on 3/13/2016

Fred would recommend this product to a friend

Was curious if my Ro di was doing good and I bought this. Happy I did. Easy to use.

Works!By Paperpimp on 3/7/2016

Paperpimp would recommend this product to a friend

This meter works good for me! easy to use and seems well built!

working goodBy siknd on 2/6/2016

siknd would recommend this product to a friend

Have had this product for a few months now its been working great bought it to show friends and family the total dissolved solids in their drinking water and tap water also used it to double check my RO system make sure that the TDS from the meter on my ro system and from my handheld probe are the same. I have also use the temperature gauge on the hand held TDS meter to double check my temperatures from my tank probes and it has read within .1° of the two probes on the tank

Mine was defectiveBy Yak on 11/23/2015

Yak wouldn't recommend this product to a friend

I read all the great reviews on tihs product, tried it out, and it was just...not...accurate. Like my local LFS was reading 90 PPM. BRS was great to deal with though, gave me a full refund on the product. They must know a few go out defective.

Works greatBy Ray on 11/10/2015

Ray would recommend this product to a friend

product as ordered and works great.

Great and accurate. Must ownBy Walter on 9/5/2015

Walter would recommend this product to a friend

Was never sure what my home, fridge, ro drinking, or what my finished product water tds was. I was testing everything like crazy when I received this. Is very accurate with my finished product water at zero tds. Now I carry it with me everywhere due to my scientific curiosities. Thank you brs for another great product.

EASY AND WORTHWHILEBy Claude on 12/15/2014

Claude would recommend this product to a friend

Easy to use, accurate, must have.

works greatBy Mike on 10/29/2014

Mike would recommend this product to a friend

Does great, accurate!

not accurateBy toms on 9/8/2014

toms wouldn't recommend this product to a friend

Got tds meter to compare to one on my new brs 4 stage plus ro unit. Hand held not accurate at all. It read 68ppm on the filtered water and 75 on water supply in. I tested on local fish stores RO unit and same readings. I would not buy this tds meter

easyBy valerie on 2/27/2014

valerie would recommend this product to a friend

Ready to use as soon as you receive it. Very quick accurate readings.

This thing functions just as advertisedBy John on 12/31/2013

John would recommend this product to a friend

In my opinion u can't have two many TDS meters. I've had a few different kinds in the past but when I bought my BRS 5 stage RO/DI system with the online tds meter I decided to go ahead and buy this handheld meter. Just like everything else they make, it's built sturdy, and it looks professional comings with its own pouch. I hope im not starting to get spoilt.

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